Add origin circuit event pubsub system

Add a publish-subscribe subsystem to publish messages about changes to
origin circuits.

Functions in circuitbuild.c and circuitlist.c publish messages to this
subsystem.

Move circuit event constants out of control.h so that subscribers
don't have to include all of control.h to take actions based on
messages they receive.

Part of ticket 27167.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/feature/control/control.c b/src/feature/control/control.c
index 4ef550c919..da62c94981 100644
--- a/src/feature/control/control.c
+++ b/src/feature/control/control.c
@@ -34,6 +34,7 @@
  **/
 
 #define CONTROL_PRIVATE
+#define OCIRC_EVENT_PRIVATE
 
 #include "core/or/or.h"
 #include "app/config/config.h"
@@ -50,6 +51,7 @@
 #include "core/or/command.h"
 #include "core/or/connection_edge.h"
 #include "core/or/connection_or.h"
+#include "core/or/ocirc_event.h"
 #include "core/or/policies.h"
 #include "core/or/reasons.h"
 #include "core/or/versions.h"
@@ -3749,7 +3751,7 @@ handle_control_extendcircuit(control_connection_t *conn, uint32_t len,
   connection_printf_to_buf(conn, "250 EXTENDED %lu\r\n",
                              (unsigned long)circ->global_identifier);
   if (zero_circ) /* send a 'launched' event, for completeness */
-    control_event_circuit_status(circ, CIRC_EVENT_LAUNCHED, 0);
+    circuit_event_status(circ, CIRC_EVENT_LAUNCHED, 0);
  done:
   SMARTLIST_FOREACH(router_nicknames, char *, n, tor_free(n));
   smartlist_free(router_nicknames);
@@ -5625,6 +5627,7 @@ control_event_circuit_status(origin_circuit_t *circ, circuit_status_event_t tp,
 {
   const char *status;
   char reasons[64] = "";
+
   if (!EVENT_IS_INTERESTING(EVENT_CIRCUIT_STATUS))
     return 0;
   tor_assert(circ);